1. Expansive soils-the hidden disaster;Jones;Civil Engng ASCE 43,1973
2. Investigation on the motorway damage due to expansive soil in Greece;Christodoulias,1987
3. Tunnel collapses in swelling clay zones;Selmer-Olsen;Tunnels and Tunnelling,1989
4. Recent experiences with swelling soils;Stamatopoulos,1989
5. Distortion and cracking of pavements on swelling clay subgrades;Wallace,1992